<div class="site-search">
    <div class="container">
        <form method="get" class="site-search-form" action="{:url('search/index')}">
            <input class="search-input" name="keywords" type="text" placeholder="输入关键字" value="">
            <button class="search-btn" type="submit"><i class="fa fa-search"></i></button>
        </form>
    </div>
</div>